/* siginfo_t, sigevent and constants.  Linux version.
   Copyright (C) 1997-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#if !defined _SIGNAL_H && !defined __need_siginfo_t \
    && !defined __need_sigevent_t
#error "Never include this file directly.  Use <signal.h> instead"
#endif

#include <bits/wordsize.h>

#if (!defined __have_sigval_t \
     && (defined _SIGNAL_H || defined __need_siginfo_t \
	 || defined __need_sigevent_t))
#define __have_sigval_t	1

/* Type for data associated with a signal.  */
typedef union sigval {
	int sival_int;
	void *sival_ptr;
} sigval_t;
#endif

#if (!defined __have_siginfo_t \
     && (defined _SIGNAL_H || defined __need_siginfo_t))
#define __have_siginfo_t	1

#define __SI_MAX_SIZE     128
#if __WORDSIZE == 64
#define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
#else
#define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
#endif

typedef struct {
	int si_signo;		/* Signal number.  */
	int si_errno;		/* If non-zero, an errno value associated with
				   this signal, as defined in <errno.h>.  */
	int si_code;		/* Signal code.  */

	union {
		int _pad[__SI_PAD_SIZE];

		/* kill().  */
		struct {
			__pid_t si_pid;	/* Sending process ID.  */
			__uid_t si_uid;	/* Real user ID of sending process.  */
		} _kill;

		/* POSIX.1b timers.  */
		struct {
			int si_tid;	/* Timer ID.  */
			int si_overrun;	/* Overrun count.  */
			sigval_t si_sigval;	/* Signal value.  */
		} _timer;

		/* POSIX.1b signals.  */
		struct {
			__pid_t si_pid;	/* Sending process ID.  */
			__uid_t si_uid;	/* Real user ID of sending process.  */
			sigval_t si_sigval;	/* Signal value.  */
		} _rt;

		/* SIGCHLD.  */
		struct {
			__pid_t si_pid;	/* Which child.  */
			__uid_t si_uid;	/* Real user ID of sending process.  */
			int si_status;	/* Exit value or signal.  */
			__clock_t si_utime;
			__clock_t si_stime;
		} _sigchld;

		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
		struct {
			void *si_addr;	/* Faulting insn/memory ref.  */
			short int si_addr_lsb;	/* Valid LSB of the reported address.  */
		} _sigfault;

		/* SIGPOLL.  */
		struct {
			long int si_band;	/* Band event for SIGPOLL.  */
			int si_fd;
		} _sigpoll;

		/* SIGSYS.  */
		struct {
			void *_call_addr;	/* Calling user insn.  */
			int _syscall;	/* Triggering system call number.  */
			unsigned int _arch;	/* AUDIT_ARCH_* of syscall.  */
		} _sigsys;
	} _sifields;
} siginfo_t;

/* X/Open requires some more fields with fixed names.  */
#define si_pid		_sifields._kill.si_pid
#define si_uid		_sifields._kill.si_uid
#define si_timerid	_sifields._timer.si_tid
#define si_overrun	_sifields._timer.si_overrun
#define si_status	_sifields._sigchld.si_status
#define si_utime	_sifields._sigchld.si_utime
#define si_stime	_sifields._sigchld.si_stime
#define si_value	_sifields._rt.si_sigval
#define si_int		_sifields._rt.si_sigval.sival_int
#define si_ptr		_sifields._rt.si_sigval.sival_ptr
#define si_addr	_sifields._sigfault.si_addr
#define si_addr_lsb	_sifields._sigfault.si_addr_lsb
#define si_band	_sifields._sigpoll.si_band
#define si_fd		_sifields._sigpoll.si_fd
#define si_call_addr 	_sifields._sigsys._call_addr
#define si_syscall	_sifields._sigsys._syscall
#define si_arch	_sifields._sigsys._arch

/* Values for `si_code'.  Positive values are reserved for kernel-generated
   signals.  */
enum {
	SI_ASYNCNL = -60,	/* Sent by asynch name lookup completion.  */
#define SI_ASYNCNL	SI_ASYNCNL
	SI_TKILL = -6,		/* Sent by tkill.  */
#define SI_TKILL	SI_TKILL
	SI_SIGIO,		/* Sent by queued SIGIO. */
#define SI_SIGIO	SI_SIGIO
	SI_ASYNCIO,		/* Sent by AIO completion.  */
#define SI_ASYNCIO	SI_ASYNCIO
	SI_MESGQ,		/* Sent by real time mesq state change.  */
#define SI_MESGQ	SI_MESGQ
	SI_TIMER,		/* Sent by timer expiration.  */
#define SI_TIMER	SI_TIMER
	SI_QUEUE,		/* Sent by sigqueue.  */
#define SI_QUEUE	SI_QUEUE
	SI_USER,		/* Sent by kill, sigsend.  */
#define SI_USER	SI_USER
	SI_KERNEL = 0x80	/* Send by kernel.  */
#define SI_KERNEL	SI_KERNEL
};

#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
/* `si_code' values for SIGILL signal.  */
enum {
	ILL_ILLOPC = 1,		/* Illegal opcode.  */
#define ILL_ILLOPC	ILL_ILLOPC
	ILL_ILLOPN,		/* Illegal operand.  */
#define ILL_ILLOPN	ILL_ILLOPN
	ILL_ILLADR,		/* Illegal addressing mode.  */
#define ILL_ILLADR	ILL_ILLADR
	ILL_ILLTRP,		/* Illegal trap. */
#define ILL_ILLTRP	ILL_ILLTRP
	ILL_PRVOPC,		/* Privileged opcode.  */
#define ILL_PRVOPC	ILL_PRVOPC
	ILL_PRVREG,		/* Privileged register.  */
#define ILL_PRVREG	ILL_PRVREG
	ILL_COPROC,		/* Coprocessor error.  */
#define ILL_COPROC	ILL_COPROC
	ILL_BADSTK		/* Internal stack error.  */
#define ILL_BADSTK	ILL_BADSTK
};

/* `si_code' values for SIGFPE signal.  */
enum {
	FPE_INTDIV = 1,		/* Integer divide by zero.  */
#define FPE_INTDIV	FPE_INTDIV
	FPE_INTOVF,		/* Integer overflow.  */
#define FPE_INTOVF	FPE_INTOVF
	FPE_FLTDIV,		/* Floating point divide by zero.  */
#define FPE_FLTDIV	FPE_FLTDIV
	FPE_FLTOVF,		/* Floating point overflow.  */
#define FPE_FLTOVF	FPE_FLTOVF
	FPE_FLTUND,		/* Floating point underflow.  */
#define FPE_FLTUND	FPE_FLTUND
	FPE_FLTRES,		/* Floating point inexact result.  */
#define FPE_FLTRES	FPE_FLTRES
	FPE_FLTINV,		/* Floating point invalid operation.  */
#define FPE_FLTINV	FPE_FLTINV
	FPE_FLTSUB		/* Subscript out of range.  */
#define FPE_FLTSUB	FPE_FLTSUB
};

/* `si_code' values for SIGSEGV signal.  */
enum {
	SEGV_MAPERR = 1,	/* Address not mapped to object.  */
#define SEGV_MAPERR	SEGV_MAPERR
	SEGV_ACCERR		/* Invalid permissions for mapped object.  */
#define SEGV_ACCERR	SEGV_ACCERR
};

/* `si_code' values for SIGBUS signal.  */
enum {
	BUS_ADRALN = 1,		/* Invalid address alignment.  */
#define BUS_ADRALN	BUS_ADRALN
	BUS_ADRERR,		/* Non-existant physical address.  */
#define BUS_ADRERR	BUS_ADRERR
	BUS_OBJERR,		/* Object specific hardware error.  */
#define BUS_OBJERR	BUS_OBJERR
	BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
#define BUS_MCEERR_AR	BUS_MCEERR_AR
	BUS_MCEERR_AO		/* Hardware memory error: action optional.  */
#define BUS_MCEERR_AO	BUS_MCEERR_AO
};
#endif

#ifdef __USE_XOPEN_EXTENDED
/* `si_code' values for SIGTRAP signal.  */
enum {
	TRAP_BRKPT = 1,		/* Process breakpoint.  */
#define TRAP_BRKPT	TRAP_BRKPT
	TRAP_TRACE		/* Process trace trap.  */
#define TRAP_TRACE	TRAP_TRACE
};
#endif

#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
/* `si_code' values for SIGCHLD signal.  */
enum {
	CLD_EXITED = 1,		/* Child has exited.  */
#define CLD_EXITED	CLD_EXITED
	CLD_KILLED,		/* Child was killed.  */
#define CLD_KILLED	CLD_KILLED
	CLD_DUMPED,		/* Child terminated abnormally.  */
#define CLD_DUMPED	CLD_DUMPED
	CLD_TRAPPED,		/* Traced child has trapped.  */
#define CLD_TRAPPED	CLD_TRAPPED
	CLD_STOPPED,		/* Child has stopped.  */
#define CLD_STOPPED	CLD_STOPPED
	CLD_CONTINUED		/* Stopped child has continued.  */
#define CLD_CONTINUED	CLD_CONTINUED
};

/* `si_code' values for SIGPOLL signal.  */
enum {
	POLL_IN = 1,		/* Data input available.  */
#define POLL_IN	POLL_IN
	POLL_OUT,		/* Output buffers available.  */
#define POLL_OUT	POLL_OUT
	POLL_MSG,		/* Input message available.   */
#define POLL_MSG	POLL_MSG
	POLL_ERR,		/* I/O error.  */
#define POLL_ERR	POLL_ERR
	POLL_PRI,		/* High priority input available.  */
#define POLL_PRI	POLL_PRI
	POLL_HUP		/* Device disconnected.  */
#define POLL_HUP	POLL_HUP
};
#endif

#undef __need_siginfo_t
#endif				/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */

#if (defined _SIGNAL_H || defined __need_sigevent_t) \
    && !defined __have_sigevent_t
#define __have_sigevent_t	1

/* Structure to transport application-defined values with signals.  */
#define __SIGEV_MAX_SIZE	64
#if __WORDSIZE == 64
#define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
#else
#define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
#endif

/* Forward declaration.  */
#ifndef __have_pthread_attr_t
typedef union pthread_attr_t pthread_attr_t;
#define __have_pthread_attr_t	1
#endif

typedef struct sigevent {
	sigval_t sigev_value;
	int sigev_signo;
	int sigev_notify;

	union {
		int _pad[__SIGEV_PAD_SIZE];

		/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
		   thread to receive the signal.  */
		__pid_t _tid;

		struct {
			void (*_function) (sigval_t);	/* Function to start.  */
			pthread_attr_t *_attribute;	/* Thread attributes.  */
		} _sigev_thread;
	} _sigev_un;
} sigevent_t;

/* POSIX names to access some of the members.  */
#define sigev_notify_function   _sigev_un._sigev_thread._function
#define sigev_notify_attributes _sigev_un._sigev_thread._attribute

/* `sigev_notify' values.  */
enum {
	SIGEV_SIGNAL = 0,	/* Notify via signal.  */
#define SIGEV_SIGNAL	SIGEV_SIGNAL
	SIGEV_NONE,		/* Other notification: meaningless.  */
#define SIGEV_NONE	SIGEV_NONE
	SIGEV_THREAD,		/* Deliver via thread creation.  */
#define SIGEV_THREAD	SIGEV_THREAD

	SIGEV_THREAD_ID = 4	/* Send signal to specific thread.  */
#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
};

#endif				/* have _SIGNAL_H.  */
